Here are the main
differences between the HP 8920B and the HP 8935 / E6380A units. The
8935 / E6380A does not have the following features found on the
8920B: 1) Duplex Screen (there is a duplex port but no duplex
screen). The E6380A can still be used for full duplex operation.
in the RF Generate screen, it
receive through either the RF I/O Port or the Antenna Port and display
received power, frequency and deviation or AM modulation.
2) There are
no RX or TX screens. The 8935 does have an RF
Generator screen that incorporates the functions found on the 8920B's
RX Test and RF
Gen screen. The 8935 also
has an RF Analyzer Screen that
that incorporate the functions found on the 8920B's RX Test and RF
3) The 8935
does not auto count the RF frequency on the
RF Analyzer Screen and the 8920B does.
4) The 8935
does have an encoder
and decoder screen like the 8920B units but these screens do not
include the DPL,
LTR, EDACS or POSCAG
functions found on the 8920B. The
8935 does encode / decode CTCSS and
8935 has 2 IF's like the 8920B units but they are 30 and 230
KHz where the 8920B's IF's are 15 & 230 KHz. The wider 30 KHz IF
for 2 way radio but will hear the
above and below adjacent
The 8935 has some extra's over the 8920B. The 8935 has spec'd. accuracy
400KHz-1000MHz and 1.7GHz-2.0GHz.and the 8935 has an
"electro-luminicent" display that is much more visable in sunlight and
has a longer life than the 8920 type CRT display. An RF_Tools Menu is
standard on the 8935 and was a software option for the 8920B units.
The RF_Tools menu includes a swept return loss, distance to fault and
cable loss program. These programs require the use of a
Here are 4 screen pictures of
the 8935 RF_Tools Screens. The selections include Swept Gain, Discrete
Freq Insertion Loss, Swept Insertion Loss, Swept Return Loss, Cable
Fault and Power Meter. When Swept Return Loss is selected, you can then
enter the Start and Stop Frequencies and the Max expected return loss.
The 8935 will then show you the proper installation of the return loss
bridge to the unit. Picture 4 shows a frequency vs. return loss graph.
This is a poor example of a 2 - 30 MHz sweep of a long wire. The dips
in the graph show the resonant frequencies.
Here are the HP / Agilent 8935 / E6380A Screens.
They are the RF Generate, RF Analyzer, AF Analyzer, Spectrum
Analyzer, Spectrum Analyzer with Tracking Generator in use,
Oscilloscope, Encoder and Decoder.
HP 8935 / E6380A RF Generator Screen
AF Analyzer Screen
Spectrum Analyzer in Tracking Generate Mode
Some of these pictures aren't the
sharpest but it's easy to note that they are very similar to the 8920B
Differences between HP
8920A/B, 8924C, E8285A and HP E6380A
Capture the 8935
screen to your PC
Back to Test Equipment
Using the E6380A Test Set
E6380A Test Set has several screens for analog use. To access these
screens, rotate the curser knob on the front panel until the curser is
on the top most field known as the title bar. Select this field by
pressing in the curser knob. With the field highlighted, rotate the
curser knob and the different fields will scroll. To select one, stop
on it and select it. The scroll knob can now be used to move the curser
to different fields on te screen. Fields are changed by selecting the
field and rotating the curser knob of using the keyboard to enter
numbers / letters. To make the test set boot to the analog RF Generator
field, your test set has this field saved as "POWEON". (in the save /
recall menu) For more information on using the E6380A, see the analog
section of the E6380A Reference